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Mercersburg Junction, Pennsylvania Weather Forecast
Mercersburg Junction, Pennsylvania Weather
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Weather Forecast for Mercersburg Junction, Pennsylvania : Franklin County
Issued: 8:06 pm EDT Oct 29, 2025 Latitude: 39.8573136 Longitude: -77.8902757 View on Google Maps

MouseOver for Detail Forecast
Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
100% chance of thunderstorms on Tonight 100% chance of thunderstorms on Thursday Mostly Sunny on Friday Mostly Sunny on Saturday Partly Sunny on Sunday Mostly Sunny on Monday Sunny on Tuesday Mostly Sunny on Wednesday
Low: 46°F High: 63°F High: 56°F High: 58°F High: 58°F High: 61°F High: 60°F High: 59°F
Low: 45°F Low: 41°F Low: 37°F Low: 37°F Low: 42°F Low: 36°F  
Thunderstorms Thunderstorms Mostly Sunny Mostly Sunny Partly Sunny Mostly Sunny Sunny Mostly Sunny
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Current Conditions at
HAGERSTOWN - (KHGR)
54°
Cloudy
as of 8:33 PM EDST
Rel. Humidity: 66%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: MVFR
Wind Data
10 MPH
070° East
Cloud Level(s): Solid Overcast at 2900ft
Current Conditions at
MARTINSBURG - (KMRB)
54°
Cloudy
as of 8:13 PM EDST
Rel. Humidity: 66%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.96 in.
Flight Rule: MVFR
Wind Data
6 MPH
060° Northeast
Cloud Level(s): Solid Overcast at 2900ft
Current Conditions at
ALTOONA - (KAOO)
46°
Cloudy
Light Rain
as of 8:31 PM EDST
Rel. Humidity: 75%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: MVFR
Wind Data
8 MPH
080° East
Cloud Level(s): Broken at 2900ft, Solid Overcast at 6000ft
Current Conditions at
FREDERICK MUNICIPAL AIR - (KFDK)
55°
Cloudy
as of 7:47 PM EDST
Rel. Humidity: 76%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 3900ft
100% chance of thunderstorms Tonight Tonight... Showers, with thunderstorms also possible after 5am. Low around 46. Northeast wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
100% chance of thunderstorms Thursday Thursday... Showers and possibly a thunderstorm before 4pm, then a slight chance of showers between 4pm and 5pm. High near 63. Northeast wind 10 to 14 mph becoming southeast in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
30% chance of rain Thursday Night Thursday Night... A chance of showers after 8pm. Mostly cloudy, with a low around 45. Southwest wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 56. West wind 14 to 18 mph, with gusts as high as 37 mph.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 41. West wind 8 to 10 mph, with gusts as high as 28 mph.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 58.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 37.
Partly Sunny on Sunday Sunday... Partly sunny, with a high near 58.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 37.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 61.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 42.
Sunny on Tuesday Tuesday... Sunny, with a high near 60.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 36.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 59.
Current Radar Image


Sun Almanac for Mercersburg Junction, Pennsylvania
Sunrise: 07:38 AM
Sunset: 6:13 PM
Civil Sunrise:07:10 AM
Civil Sunset: 6:41 PM
Nautical Sunrise: 06:38 AM
Nautical Sunset: 7:13 PM
Astro Sunrise: 06:07 AM
Astro Sunset: 7:44 PM
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